Based on the epic poetic masterpiece "The Divine Comedy" written by Italian author Dante Alighieri in the early 14th Century. The three main components of "The Divine Comedy" are Dante's descriptions of Hell, Purgatory and Paradise.

"Dante XXI" was originally titled "Dante 05", but being released in 2006 and not in 2005, the name was changed.

Japanese edition bonus track:
16. Screaming For Vengeance (Judas Priest cover) (03:31)
The track is also available on the Judas Priest tribute album "Hell Bent Forever - A Tribute To Judas Priest", which was released in 2008.

"Scratch the Surface" (Sick of It All cover) (02:35) is included on the tribute album Our Impact Will Be Felt: A Tribute to Sick of It All (2007).

"Convicted in Life (demo)" (03:17) was released in the March 2006 issue of Revolver magazine (on stands January 10) as part of their "Revolver Bootleg Series."

"I's Evil" (04:11) is another B-Side song from Dante XXI and was officially released on the band's Myspace page.